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High Performance Indexable Gundrill Series

Tungaloy has further expanded its indexable gundrill series, DeepTriDrill, to include a diameter range of o28.01 mm - o40 mm or o1.1" - o1.57."

"Deep hole drilling is a challenging operation, often inducing bottlenecks in many manufacturing shops. Brazed gundrills and solid twist drills are traditional tools for this operation. The typical brazed gundrills usually accommodate a single-flute, non-coated carbide tip, which constrain its applications to low parameter drilling. The solid twist drill is better for high feed drilling; however, curved holes and chip clogging are common setbacks. Re-conditioning and inventory management also incur significant extra costs with manufacturers," said a company spokesperson.

The DeepTriDrill range incorporates three inserts and two guide-pads oriented in an optimized position on the drill head. "This helps achieve high accuracy regarding hole circularity, straightness and surface finish, which was traditionally reserved for brazed gundrills. The insert features chipbreakers designed to create optimal chip flow during deep hole drilling. Improved chip evacuation and reduced cutting forces enable higher feedrates than traditional gundrills. The coated inserts and guide-pads also allow DeepTriDrill to reach higher cutting speeds, which is difficult with brazed gundrills," said the spokesperson.

"DeepTriDrill not only increases drilling performance while maintaining machining stability, but also facilitates inventory management due to its indexable system. This large diameter range expansion complements DeepTriDrill, further enhancing its product positioning in the deep hole drilling market for high productivity and economy."

Two drill body types are available: MCTR for use in machining centers and lathes; and TRLG for use in dedicated gundrill machines.

For more information contact:

Tungaloy America, Inc.

3726 N. Ventura Dr.

Arlington Heights, IL 60004


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